Brake Pedal Switch A

Where it lives

For C0040, the part to look at first is the switch named here.

Check these first

• A worn or damaged brake pedal switch A
• Corrosion or water at the brake pedal switch A connector
• An open or short in the brake pedal switch A wiring
• Incorrect brake pedal switch A adjustment
• A fault in the brake control module reading switch A

What to do next

1. Inspect and clean the brake pedal switch A connector
2. Check the brake pedal switch A adjustment
3. Test the brake pedal switch A wiring for opens and shorts
4. Replace the brake pedal switch A if it tests bad
5. Test the brake control module if the switch and wiring are good
6. Clear the code and retest

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